Home / 4,815.75-6,645.81-2,719.89

Finding the Fourth Proportional to 4,815.75, 6,645.81 and 2,719.89

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Solution

The fourth proportional to 4,815.75, 6,645.81 and 2,719.89 is: 3,753.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.75 : 6,645.81 = 2,719.89 : x
  2. Step 2: Convert to fraction form
    4,815.75/6,645.81 = 2,719.89/x
  3. Step 3: Cross multiply
    4,815.75x = 6,645.81 × 2,719.89
  4. Step 4: Simplify right side
    4,815.75x = 18,075,872.16
  5. Step 5: Solve for x
    x = 18,075,872.16/4,815.75
  6. Step 6: Final answer
    x = 3,753.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.